// -*- java -*-

var type = "IE";
var cur_lyr;	

function BrowserSniffer() {
    if (navigator.userAgent.indexOf("Opera") != -1 && document.getElementById) type="OP";
    else if (document.all) type="IE";
    else if (document.layers) type="NN";
    else if (!document.all && document.getElementById) type="MO";
    else type = "IE";
}

BrowserSniffer();

function hideBox(){
    document.getElementById("speclink").href = "#";
    document.getElementById("newsalert").style.visibility = "hidden";
}

function setAmoCookie(id) {

    // ulozime prepnuti zalozky do susenky - pouze, kdyz je to fakt prepnuti, ne jen pocatecni zapnuti
    
    var li = document.location.pathname.lastIndexOf("/");
    var pg = document.location.pathname;
    
    if (li > 0) pg = pg.substr(li+1);
    
    document.cookie = "tabaction_"+pg+"="+id+"; path=/; domain=is.mff.cuni.cz;";
        
}

function swapLayers(id) {
    
    if (cur_lyr) hideLayer(cur_lyr);

    showLayer(id);
    cur_lyr = id;
    
}

var new_win = '';

function openExtraWindow(mypage, w, h) {

	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl;
        winproprs = 'resizable=yes,dependent=no,scrollbars=yes,directories=no';
//	win = window.open(mypage, '', winprops);

        if (!new_win.closed && new_win.location)
	{
		new_win.location.href = url;
	} else {
            new_win = window.open(mypage, '', 'height='+h+',width='+w+',resizable=yes,dependent=yes,scrollbars=yes,directories=no');
            if (!new_win.opener) new_win.opener = self;
        }

	if (parseInt(navigator.appVersion) >= 4) { new_win.window.focus(); }

	if (window.focus) {new_win.focus()}

	return false;

}

function menuHighlight(action, id) {
    
    var lyr1, lyr2;
    
    lyr1 = getElemRefs('hrefspan'+id);
    lyr2 = getElemRefs('href'+id);
    
    if (lyr1 && lyr1.css) {
        if (action == 'mouseover' && cur_lyr != id) {
            lyr1.css.backgroundColor= "#f6e6c6";
            if (lyr2 && lyr2.css) lyr2.css.color = "#000000";
        } else if (action == 'mouseout' && cur_lyr != id) {
            lyr1.css.backgroundColor= "#ddcdae";
            if (lyr2 && lyr2.css) lyr2.css.color = "#555555";
        } 
    }
    
}

function showLayer(id) {
    
    var lyr;
    
    lyr = getElemRefs(id);
    if (lyr && lyr.css) {
        lyr.css.display = "block";
    }
    
    lyr = getElemRefs('hrefspan'+id);
    if (lyr && lyr.css && type != "NN") {
        lyr.css.backgroundColor = "#e9d9bd";
        lyr.css.fontColor = "black";
        lyr.css.backgroundImage = 'url(img/menu-bg.gif)';
        lyr.css.top = -2;
    } 
    
    lyr = getElemRefs('href'+id);
    if (lyr && lyr.css && type != "NN") {
        lyr.css.color = "#000000";
    } 
    
    moveFocus(id);
    
}

function hideLayer(id) {
    
    var lyr;
    
    lyr = getElemRefs(id);
    if (lyr && lyr.css) {
        lyr.css.display = "none";
    }
 
    lyr = getElemRefs('hrefspan'+id);
    if (lyr && lyr.css && type != "NN") {
        lyr.css.backgroundColor = "#ddcdae";
        lyr.css.backgroundImage = '';
        lyr.css.top = 0;
    } 
    
    lyr = getElemRefs('href'+id);
    if (lyr && lyr.css && type != "NN") {
        lyr.css.color = "#555555";
    } 
    
}

function getElemRefs(id) {
    var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
    if (el) el.css = (el.style)? el.style: el;
    return el;
}

function swap_bg(id, bg, state) {
    st = state.checked == true ? true : false;
    //     alert(state.checked);
    lyr = getElemRefs(id);
    if (lyr && lyr.css && type != "NN") {
        //      if (lyr.css.backgroundImage != '') {
          //      if (state != true) {
      if (st == false) {
        lyr.css.backgroundImage = '';
        lyr.css.borderColor= '#ddcdae';
      } else {
        lyr.css.backgroundImage = bg;
        lyr.css.borderColor= '#00D838';
      }
    } 

    return true;

}

function swap_radio_bg(bg, state) {

    var p = state.form;
    var stl;

    if (p) {
        
        for (var i = 0; i < p.elements.length; i++) {
            if (p.elements[i].type == 'radio') {
                
                lyr = getElemRefs("card_" + p.elements[i].id.substring(6,50));
                
                if (lyr && lyr.css && type != "NN") {

                    if (p.elements[i].checked != true) {
                        lyr.css.backgroundImage = '';
                        lyr.css.borderColor= '#ddcdae';
                    } else {
                        lyr.css.backgroundImage = bg;
                        lyr.css.borderColor= '#00D838';
                    }
                } 
            }
        }
    }

    return true;

}


function gk_log_detail(url) {

    lyr = getElemRefs('gk_log_detail_iframe');
    
    if (lyr && lyr.css) {
        frames['gk_log_detail_iframe'].location.href = url;
        lyr.css.display = "block";
        lyr.css.visibility = "visible";
        if (lyr.css.position == 'absolute') {
            lyr.css.top = document.body.scrollTop + 15; // pouzivame absolute, IE neumi fixed
        }
    } else {
    }

    return false;

}

// podsviti aktualni radek
function gk_log_on(id) {

    lyr = getElemRefs(id);
    
    if (lyr && lyr.css) {
        lyr.css.backgroundColor = "#f6e6c6";
        //        lyr.css.visibility = "visible";
        //        alert(lyr.src);
        //        alert(lyr.display);
    } else {
    }

    return false;
}

// od-podsviti aktualni radek
function gk_log_off(id) {

    lyr = getElemRefs(id);
    
    if (lyr && lyr.css) {
        lyr.css.backgroundColor = "#ddcdae";
        //        lyr.css.visibility = "visible";
        //        alert(lyr.src);
        //        alert(lyr.display);
    } else {
    }

    return false;
}

function switch_all(state, targ) {

    var p = state.form;
    var stl;

    if (p) {
        
        for (var i = 0; i < p.elements.length; i++) {
            if (p.elements[i].type == 'checkbox') {
                //                alert(p.elements[i].id.substr(1,6));
                if (p.elements[i].id.substr(0,6) == 'chbox_') {
                    //                    p.elements[i].checked = state.checked;
                    p.elements[i].checked = targ;
                    swap_bg('card_'+p.elements[i].id.substr(6,50), 'url(img/green-sel.gif)', p.elements[i]);
                    //                    swap_bg(id, bg, state);
                }

            }
        }
    }

    return true;

}

function moveFocus(id) {
    
    var lyr;
    
    //    lyr = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
    
    //    if (lyr) { lyr.blur(); }  
    
    lyr = (document.getElementById)? document.getElementById('focus'+id): (document.all)? document.all['focus'+id]: (document.layers)? document.layers['focus'+id]: null;
    
    if (lyr) {
        if (lyr.disabled != true) {
        lyr.focus();
        }
        if (lyr.form['focus'+id].disabled != true) {
            lyr.form['focus'+id].focus();
        }
    } 
    
}

function setSrc(g) // nastaveni obrazku
{
    
    // if (g==0){
    // var x=document.images
    // x["acc"].src="/images/accessories_new_on.gif"
    // }
    // else
    // {
    // var x=document.images
    // x["acc"].src="/images/accessories_new.gif"
    // }
    
    return type == "NN";
    
}